Plumb-level.



PATENTED SEPT. 11, 1906. W. A. SN BED. PLUMB LEVEL.

APYLIGATION FILED MAY 19.1906.

19i in uses no a co., IA'sumamu, u. c.

WILLIAM A. SNEED, OF HILLSBORO, MARYLAND.

PLUMB-LEVEL.

- Specification of Letters Patent.

Application filed May 19, 1906. Serial No. 317,789.

the following is a specification.

This invention relates to a plumb-boblevel device for use either onhorizontals or perpendiculars; and it consists in the construction andarrangement of the several parts which will be more fully hereinafterset forth.

In the drawings, Figure 1 is an elevation of the combined plumb andlevel device embodying the features of the invention. Fig. 2 is adetailenlarged elevation of a portion of the same, showing parts thereofremoved. Fig. 3 is a transverse vertical section on the line 3 3, Fig.2.

Similar numerals of reference are employed to indicate correspondingparts in the views.

The numeral 1 designates the stock of the instrument, which may beconstructed as usual and of any suitable length, width, and thickness.In the center and adjacent to one end the level and plumb devices arelocated, both being of precisely the same constructionl or arranged sothat the one may be used for truing horizontals and the other foroperating in conjunction with perpendicular structures. As each of theplumb and level devices is of exactly the same construction and variesonly in the change of position, the description of one will apply to theother. The stock 1 at the points where'thelevel and plumb devices arelocated has circular openings 2 formed therein and head-slots 3, whichnormally communicate with the said openings. In addition lateral slots 4are formed in the stock, for a purpose which will be presentlyexplained. In each of the slots 2 a metallic cylinder 5 is mounted andis fully open at opposite ends. In the upper central portion of eachcylinder 5 a slot 6 is formed which communicates with the head-slot 3and secured on the upper part of the cylinder and projecting within theslot 3 are fulcrumears 7, disposed on opposite sides of the slot 6. Afulcrum-head 8 is arranged between the ears 7 and has terminalcone-bearings 9, of

any suitable nature, engaging the said ears,

and from the said head a rod 10 depends and is connected at its lowerend to a bob 11,the slot 6 being sufliciently long to permit the rod 10to swing unretardingly therein. Projecting outwardly from diametricallyopposite points of the cylinder 5 and in planes at right, angles to theplane of suspension of the rod 10 are adjusting-arms 12, consisting offlat strips of metal secured to the cylinder and movably projected intothe slots 4, The outer ends of the arms 12 are formed with arcuate slots13, which are struck from the center of the cylinder 5 and are engagedby headed studs 14, said studs being preferably in the form ofset-screws. These arms 12 by their adjustment may becaused to take upany irregularities or inequalities in the level or plumb devices whichmay arise from wear or other causes.

Normally the level or plumb device, including the rod 10 and bob 11,hangs centrally with respect to the cylinder 5, and any inequalities ina horizontal or a perpendicular structure will be instantly indicated bythe movement of therod 10 and bob 11 to either one side or the other ofthe central p11 ane of the cylinder 5 and in accordance wit thedirection of the inequality. From the opposite ends of the cylinderglass sight-plates 15 are disposed and held in place by annular coveringor binding plates 16, which are secured by suitable means to thestock 1. These covering or binding plates fully inclose the slots 4 andalso the slot 3, and from the exterior nothing is exposed except thesightplates 15, the said binding-plates, the rods 10, and bobs 11.

The improved combined plumb and level will be found exceptionallyadvantageous in its operation and use and is superior in many --waystothe ordinary spirit or double level and plumb device.

Having thus described the invention, what is claimed is 1. Thecombination with a stock, of a level or plumb comprising a cylinderhaving diametrically-opposed adjusting-arms with terminal 'arcuate slotstherein extending transversely thereof, set screws engaging said slotsand connected to the stock, a rod movably projecting into the cylinderand fulcrumed on the latter, a bob on the free extremity of the rod, andsight-plates applied against opposite ends of the cylinder.

2. In a device of the class set forth, the

combination of a stock having an opening therethrough and a head-slotnormally communicating withsaid opening, and adjustingslots also formedin the stock in planes at Patented Sept. 11,1906.

inder from the fulcrum-head, a, hole on the [O lower extremity of therod, and sight-plates secured against opposite ends of the cylinder.

In testimony whereof I afliX my signature in presence Of two Witnesses.

WILLIAM A. SNEED. Witnesses H, W. B. ROWE, H. NELSON BEAVER.

